Contains view functions to provide information about the pool that is computed rather than stored on the blockchain. The functions here may have variable gas costs.
function observe( uint32 secondsAgos ) external view returns (int56 tickCumulatives, uint160 secondsPerLiquidityCumulativeX128s)
Returns the cumulative tick and liquidity as of each timestamp
secondsAgo from the current block timestamp
To get a time weighted average tick or liquidity-in-range, you must call this with two values, one representing the beginning of the period and another for the end of the period. E.g., to get the last hour time-weighted average tick, you must call it with secondsAgos = [3600, 0]. The time weighted average tick represents the geometric time weighted average price of the pool, in log base sqrt(1.0001) of token1 / token0. The TickMath library can be used to go from a tick value to a ratio.
|uint32||From how long ago each cumulative tick and liquidity value should be returned|
|int56||Cumulative tick values as of each |
|uint160||Cumulative seconds per liquidity-in-range value as of each |
function snapshotCumulativesInside( int24 tickLower, int24 tickUpper ) external returns (int56 tickCumulativeInside, uint160 secondsPerLiquidityInsideX128, uint32 secondsInside)
Returns a snapshot of the tick cumulative, seconds per liquidity and seconds inside a tick range
Snapshots must only be compared to other snapshots, taken over a period for which a position existed. I.e., snapshots cannot be compared if a position is not held for the entire period between when the first snapshot is taken and the second snapshot is taken.
|int24||The lower tick of the range|
|int24||The upper tick of the range|
|int56||The snapshot of the tick accumulator for the range|
|uint160||The snapshot of seconds per liquidity for the range|
|uint32||The snapshot of seconds per liquidity for the range|